Summary of findings 3. Hypnosis compared with wait list.
| Hypnosis compared with wait list for conversion disorder | ||||||
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Patient or population: people with conversion disorder according to DSM‐IV or ICD‐10 criteria Settings: outpatient Intervention: hypnosis Comparison: wait list | ||||||
| Outcomes | Illustrative comparative risks* (95% CI) | Relative effect (95% CI) | No of participants (studies) | Certainty of the evidence (GRADE) | Comments | |
| Assumed risk | Corresponding risk | |||||
| Wait list | Hypnosis | |||||
|
Reduction in physical signs (Severity of impairment) Measured by the VRMC scale (higher is better) Range: 1–7 End of treatment |
The mean reduction in physical signs in the control group was 3.8 |
MD 2.10 higher (1.34 higher to 2.86 higher) |
— | 49 (1 study) | ⊕⊕⊝⊝ Lowa,b | Hypnosis may have little effect on reduction in physical signs at end of treatment |
| Level of functioning | — | — | — | — | — | No studies assessed this outcome |
| Quality of life | — | — | — | — | — | No studies assessed this outcome |
| Adverse events | — | — | — | — | — | No studies assessed this outcome |
| *The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI). CI: confidence interval; DSM‐IV:Diagnostic and Statistical Manual of Mental Disorders 4th Edition; ICD‐10:International Classification of Diseases, Tenth Revision; MD: mean difference; VRMC: Video Rating Scale for Motor Conversion Symptoms. | ||||||
| GRADE Working Group grades of evidence High quality: further research is very unlikely to change our confidence in the estimate of effect. Moderate quality: further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate. Low quality: further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate. Very low quality: we are very uncertain about the estimate. | ||||||
aDowngraded one level due to high risk of bias. bDowngraded one level due to imprecision (based on 1 study with few patients).